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Seawater carbonate chemistry and net calcification rates of cold-water coralline algae Clathromorphum compactum and Clathromorphum nereostratum

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Titel: Seawater carbonate chemistry and net calcification rates of cold-water coralline algae Clathromorphum compactum and Clathromorphum nereostratum
Autoren: Westfield, Isaac T, Gunnell, John, Rasher, D B, Williams, Branwen, Ries, Justin B
Verlagsinformationen: PANGAEA
Publikationsjahr: 2022
Bestand: PANGAEA - Data Publisher for Earth & Environmental Science (AWI Bremerhaven / MARUM Bremen)
Schlagwörter: Alkalinity, total, standard deviation, Aragonite saturation state, Benthos, Bicarbonate, Bicarbonate ion, Buoyant mass, Calcification/Dissolution, Calcification rate, Calcite saturation state, Calculated using CO2SYS, Calculated using seacarb after Nisumaa et al. (2010), Carbon, inorganic, dissolved, Carbonate ion, Carbonate system computation flag, Carbon dioxide, partial pressure, Clathromorphum compactum, Clathromorphum nereostratum, Coast and continental shelf, Containers and aquaria (20-1000 L or < 1 m**2), Coulometric titration, Date, Fugacity of carbon dioxide (water) at sea surface temperature (wet air), Growth, Growth/Morphology, Identification
Beschreibung: Ocean acidification and warming are expected to disproportionately affect high-latitude calcifying species, such as crustose coralline algae. Clathromorphum nereostratum and Clathromorphum compactum are the primary builders of carbonate-hardgrounds in the Aleutians Islands of Alaska and North Atlantic shelf, respectively, providing habitat and settlement substrates for a large number of species. We exposed wild-collected specimens to 12 pCO2/T treatments (344–3322 μatm; 6.38–12.40°C) for 4 months in a factorially crossed, replicated laboratory experiment. Impacts of pCO2/T on algal calcification were quantified from linear extension and buoyant weight. Here we show that, despite belonging to the same genus, C. nereostratum exhibited greater sensitivity to thermal stress, while C. compactum exhibited greater sensitivity to pH stress. Furthermore, multivariate models of algal calcification derived from the experiment indicate that both C. nereostratum and C. compactum will commence net dissolution as early as 2120 and 2200 AD, respectively. Our results therefore indicate that near-term climate change may lead to substantial degradation of these species and loss of the critical hardground habitats that they form.
Publikationsart: dataset
Dateibeschreibung: text/tab-separated-values, 32400 data points
Sprache: English
Relation: Westfield, Isaac T; Gunnell, John; Rasher, D B; Williams, Branwen; Ries, Justin B (2022): Cessation of Hardground Accretion by the Cold-Water Coralline Algae Clathromorphum Compactum and Clathromorphum Nereostratum Predicted Within Two Centuries. Geochemistry, Geophysics, Geosystems, 23(5), https://doi.org/10.1029/2021GC009942; Westfield, Isaac T; Ries, Justin B; Williams, Branwen; Rasher, D B (2022): Clathromorphum compactum and C. nereostratum calcification experiment data involving multiple temperatures and pCO2 levels (CorallineAlgaePaleo-pH) [dataset]. Biological and Chemical Oceanography Data Management Office (BCO-DMO), https://doi.org/10.26008/1912/bco-dmo.871633.1; Gattuso, Jean-Pierre; Epitalon, Jean-Marie; Lavigne, Héloïse; Orr, James (2021): seacarb: seawater carbonate chemistry with R. R package version 3.2.16. https://cran.r-project.org/web/packages/seacarb/index.html; https://doi.pangaea.de/10.1594/PANGAEA.946236; https://doi.org/10.1594/PANGAEA.946236
DOI: 10.1594/PANGAEA.946236
Verfügbarkeit: https://doi.pangaea.de/10.1594/PANGAEA.946236
https://doi.org/10.1594/PANGAEA.946236
Rights: CC-BY-4.0: Creative Commons Attribution 4.0 International ; Access constraints: unrestricted ; info:eu-repo/semantics/openAccess
Dokumentencode: edsbas.99729BB6
Datenbank: BASE
Beschreibung
Abstract:Ocean acidification and warming are expected to disproportionately affect high-latitude calcifying species, such as crustose coralline algae. Clathromorphum nereostratum and Clathromorphum compactum are the primary builders of carbonate-hardgrounds in the Aleutians Islands of Alaska and North Atlantic shelf, respectively, providing habitat and settlement substrates for a large number of species. We exposed wild-collected specimens to 12 pCO2/T treatments (344–3322 μatm; 6.38–12.40°C) for 4 months in a factorially crossed, replicated laboratory experiment. Impacts of pCO2/T on algal calcification were quantified from linear extension and buoyant weight. Here we show that, despite belonging to the same genus, C. nereostratum exhibited greater sensitivity to thermal stress, while C. compactum exhibited greater sensitivity to pH stress. Furthermore, multivariate models of algal calcification derived from the experiment indicate that both C. nereostratum and C. compactum will commence net dissolution as early as 2120 and 2200 AD, respectively. Our results therefore indicate that near-term climate change may lead to substantial degradation of these species and loss of the critical hardground habitats that they form.
DOI:10.1594/PANGAEA.946236